PMC:7075884 / 35938-35985 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T262","span":{"begin":0,"end":47},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"The viral titer was determined by plaque assay."}